Comparison

Multitone Messenger vs Kelsius

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Multitone Messenger

Features
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Multitone Messenger Multitone Messenger provides all the features and advantages of publicly available chat apps with extra functionality, making it suitable for emergency service and business use by enhancing security, improving oversight and adding features, which take it far beyond a simple messaging app. Messenger is ideal for a number of applications - a collaborative tool for clinical staff in hospitals, enables security teams to share video or photograph images or keep on and off-site colleagues in touch, wherever present in the world. Multitone Messenger requires Multitone i-Message offered as a secure cloud service, on-premises or cloud/hybrid solution. Key features - Secure one-to-one and chat messaging - Dedicated contact list: name, job title or department - Select message priority with silent, DND override for emergency alerts - Major incident management response and availability - Variable status, ensuring colleagues know your availability - Delivery and read receipts - Image, video and document sharing - 3/4/5G and Wi-Fi compatible - Fully compliant with relevant laws & regulations - Integrated with the Multitone messaging ecosystem for administration, backup and audit - Available as a cloud service, on-premises or cloud/hybrid solution - If on-premises, can operate over LAN without external internet connection Message status The ability to track message status from ‘device acknowledgement’ upon message delivery to ‘read receipt’ and ‘user acknowledgement’, this guarantees that important communications never go unanswered. Message priority It is possible to set the priority level of messages: communications sent at emergency priority will automatically override silent or do not disturb settings. In addition, the Multitone ecosystem will send messages via all designated contact methods for that user - SMS, paging call and email. Emergency messages can be received, even if the phone is in silent mode, meaning Multitone Messenger can complement or replace pagers for critical messaging. Major incident management Multitone Messenger integrates with Multitone Major Incident management system enabling rapid response and mobilisation across the whole organisation, specific departments and specialism’s ensuring the right people are alerted at the right time, making sure they get to the right place. User status With the Multitone Messenger status indicator, including “available”, “do not disturb” and “absent” settings, you can instantly see who is and is not available. Crucially, whatever your status, this setting never prevents critical messages from reaching you. Secure & GDPR compliant Multitone Messenger is designed to be the safest communications platform possible: allowing you to share sensitive internal reports, medical photos and other confidential files without fear of data being compromised. Data stored within the app cannot be accessed by other apps, transferred to internal storage or shared outside the Multitone ecosystem. Monitored network A powerful feature is its use of a fully monitored network connection. If a smartphone utilising the Multitone Messenger app should go offline due to poor coverage, messages sent during this period will not be lost: The system stores them so that once coverage is re-established, any missed messages are automatically re-sent. AES256 Encryption All data transmitted and stored within the Multitone ecosystem is end-to-end encrypted using AES256, as is data held on devices. The app features two-factor authentication, if the device is lost or stolen, access and details of the device can be revoked immediately, protecting sensitive data.

About

Kelsius

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Protect your stock, customers and patients by receiving prompt and dependable alerts whenever your refrigeration equipment exceeds predefined thresholds. For clients who are equipped with a Kelsius wireless sensor network, this app will receive notification of any sensor measurement excursion alert (temperature, humidity, ...). In addition, you will be able to view the alert detail and enter corrective actions, for compliance.

Screenshots

Multitone Messenger4 screens
Kelsius4 screens

Verdict

The call

The clearest difference is update cadence: Kelsius at every 3 weeks against Multitone Messenger's every 4 months. Kelsius also leads on iOS requirement (12.4 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Multitone Messenger ships an update every 4 months, Kelsius every 3 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 4 level
Multitone Messenger versus Kelsius: the parameters behind the verdict, then further details
ParameterMultitone MessengerKelsius
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS14.012.4 — better
Further details — not scored
Size59 MB24 MB
Age rating4+17+
DeveloperMultitone Electronics PlcFrederic Lusson

In-app purchases

None

Multitone Messenger

No in-app purchases

None

Kelsius

No in-app purchases

Questions

Is Multitone Messenger free?
Multitone Messenger is free to download, with no in-app purchases.
Is Kelsius free?
Kelsius is free to download, with no in-app purchases.
Do Multitone Messenger or Kelsius have ads?
Neither Multitone Messenger nor Kelsius shows ads.
Which is updated more often, Multitone Messenger or Kelsius?
Multitone Messenger ships an update every 4 months, and Kelsius every 3 weeks. Most recently, Multitone Messenger was updated on October 29, 2026 and Kelsius on October 27, 2026.

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